Wrench



K. 0. W. LINDQUIST.

WRENCH.

APPLICATION FILED JULY 23,1920. 1,41 1,285. Patented Apr. 4, 1922.

[o l0 /8 lb UNITED STATES`v gPATENT oFFlcE.

. KNUT LINDQUIST, .OFI CHICAGO, ILLINOIS. y

i WRENCH.

To all whom t may cof/wem.

Be it known that I, KNUT O. IV. LIND- QUrs'r, a former subject of the King of Sweden, having declared my intention of becoming a citizen of the United States, and a resident of the city of Chicago, county of (look, and State of Illinois, have invented certain new and useful .Improvements in Wrenches, of which the following is a speci` ication.

Myl invention relates to improvements in wrenches, and has for its object the pro vision of an improved wrench `which is capable of automatic engagement with a nut by mere application thereto.

ther objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best 4understood by reference to the accompanying drawings forming a part of this specification, and in which,

Fig. 1 is a side View of a wrench embodying the invention, shown in normal position;

Fig. 2, a similar view of the wrench shown in position of engagement with a nut;l

Fig. 3, a longitudinal section corresponding with Fig. 1, and

Fig. 4., a horizontal section taken on line i-4 of Fig. 3. K

The referred form of construction, as illustrated in the drawings, comprises a suitable handle 5 having a wrench jaw 6 pivotally mounted at one end thereof, said wrench jaw being provided with a rearwardly extending arm 6 pivoted at 7 in a bifurcation or slot 8 provided at the corresponding end of handle 5. An adjustable wrench jaw 9 is arranged to co-operate with the jaw 6 and provided with a rearwardly extending shank 9 sliding freely through the jaw 6 as indicated. Guide flanges 10 are provided on the jaw 6 to guide the shank 9 in its movements. At its inner end,the shank 9 is provided with an arm 11 connected with handle 5 by afcoiled wire spring 12 arranged in a recess 13 provided in said handle as shown. The shank 9 is also provided on its inner side with ratchet teeth 14 co-operating with the detent 15n pivoted at4 Specification of Letters Patent.v v Patented Apr', 1922i.

Application 4led` July 23,

1920. Serial No. 398,363.

jaw 6, and whereby said'detent is normally held from engagement with the' teeth 14 as indicated. .The jaw 9'is provided with an extension 20 for engagement with a nut 2l for use in engaging the wrench with the nut.Y f

In use the wrench is engaged with the nut by grasping the handle inone hand and engaging the projecting edge 20 on jawv9 with a side of the n ut. Then by pulling longitudinally on the handle 5, the jaw 9 will yield sufficiently against the resistance of spring 12 to permit of theV engagement of jaws 9 and 6 with opposite sides of the nut as indicated in Fig. 2. Then upon turning movement of the wrench, the ljaws 9 and 6 will rock relatively to handle 5, thus freeing-the head 18 from jaw 6 and causing the detentl to engage one of theratchet teeth 14 as indicated in Fig. 2.' This locks the jaw 9 against further separation vfrom jaw 6 and also locks said jaws against further rocking, thus effecting a rigid connection between the Wrench and the nut for turning the nut. In this way, the wrench may be readily engaged with a nut of any size Within the capacity of the wrench and the nut Vturned without preliminary adjustment of the jaw 9.

While I have illustrated and described the preferred form of construction for carrying my invention Vinto effect, this is capable of variation and modification without departing fromY the spirit of the invention. I` therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims. Y

Having described vmy invention, what I claim as new and desire to secure by Letters Patent is 1. A wrench comprising a handle; a jaw on said handle; a co-operating jaw adapted to be freely moved longitudinally with respect to said handle; means for locking said ljaw against longitudinal movement upon a turning movement of said handle; and an eX- tended portion formed on said jaw adapted to engage a nut. for adjusting said jaws in operative engagement with said nut, substantially as described.

2. A. wrench comprising a handle; a jaw on said handle, a co-operating spring held jaw having an extended portion adapted upon engagement with a nut to be freely moved longitudinally With respect to said Vhandle for adjusting said jaws on said nut;

and means pivotally mountedon said handle for locking said, co-operating spring held jaw upon a turning movement of said han dle, substantially as described.

3. A Wrench comprising a handle;"a jaw pivoted on said handle; aV co-operating j aw slidably carried by said pivoted jaw; means for automatically locking said co-operating j aw upon turning movement of said handle;

. and an extended portion `on said co-operatjaw upon turning movement with said ing jaw adapted upon engagement Vwith a nut to freelymove said co-operating jaw longitudinally with respect tosaid handle, substantially as described. V

4. A Wrench comprising a handle; a jaw pivoted on said handle; a co-operatng spring-held jaw sliding freely to be adjusted by engagement with a nut; and means normally vengaging said pivotally mounted jaw for automatically locking said sliding handle, substantially 'as described. 'i

5. A Wrench comprising a handle; a jaw pivotally mounted at one end of said handle;

Y a (3o-operating jaw having a shank sliding freely'through said pivoted jaw; a tension springconnecting the inner endv of said inner edge of said shank; a spring-held detent pivotally mounted in said handle and cooperating with said teeth; and a head` on said detent resting against said pivoted jaw and normally holding said detent from engagement` with ksaid ratchet teeth, butfree;

ing said detent 'for engagement With said .ratchet teeth upon turning movementl of said handle; substantially as described.

In testimony whereof I have signed my nameto this specification in the presence of tWo subscribingwitnesses. 7 2, 1 KNUT O. W. LINDQUIST. Witnesses: Y

JOSHUA R. H. Pours,l ROSE K. Treia.-r 

